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content / browser / file_system_access / file_system_access_file_modification_host_impl.h [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_FILE_MODIFICATION_HOST_IMPL_H_
#define CONTENT_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_FILE_MODIFICATION_HOST_IMPL_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/thread_annotations.h"
#include "base/types/pass_key.h"
#include "content/browser/file_system_access/file_system_access_manager_impl.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "storage/browser/file_system/file_system_context.h"
#include "storage/browser/file_system/file_system_url.h"
#include "third_party/blink/public/mojom/file_system_access/file_system_access_file_modification_host.mojom.h"
namespace storage {
class QuotaManagerProxy;
}
namespace content {
class FileSystemAccessFileModificationHostImplTest;
// This is the browser side implementation of the
// FileSystemAccessFileModificationHost mojom interface. Instances of this
// class are owned by the FileSystemAccessHandleHost instance passed in to the
// constructor.
class CONTENT_EXPORT FileSystemAccessFileModificationHostImpl
: public blink::mojom::FileSystemAccessFileModificationHost {
public:
// Creates a FileSystemAccessFileModificationHost that manages capacity
// reservations for the file. FileModificationHosts should only be created
// via the FileSystemAccessHandleHost.
FileSystemAccessFileModificationHostImpl(
FileSystemAccessManagerImpl* manager,
const storage::FileSystemURL& url,
base::PassKey<FileSystemAccessAccessHandleHostImpl> pass_key,
mojo::PendingReceiver<blink::mojom::FileSystemAccessFileModificationHost>
receiver,
int64_t file_size);
// Constructor for testing
FileSystemAccessFileModificationHostImpl(
FileSystemAccessManagerImpl* manager,
const storage::FileSystemURL& url,
base::PassKey<FileSystemAccessFileModificationHostImplTest> pass_key,
mojo::PendingReceiver<blink::mojom::FileSystemAccessFileModificationHost>
receiver,
int64_t file_size);
FileSystemAccessFileModificationHostImpl(
const FileSystemAccessFileModificationHostImpl&) = delete;
FileSystemAccessFileModificationHostImpl& operator=(
const FileSystemAccessFileModificationHostImpl&) = delete;
~FileSystemAccessFileModificationHostImpl() override;
// blink::mojom::FileSystemAccessFileModificationHost:
void RequestCapacityChange(int64_t capacity_delta,
RequestCapacityChangeCallback callback) override;
void OnContentsModified() override;
// Returns the the total space allocated for the file whose capacity is
// managed through this host. Initially, this is the file's size.
int64_t granted_capacity() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return granted_capacity_;
}
private:
const scoped_refptr<storage::QuotaManagerProxy>& quota_manager_proxy() const {
return manager_->context()->quota_manager_proxy();
}
// Called when the receiver is disconnected.
void OnReceiverDisconnect();
void DidGetUsageAndQuota(int64_t capacity_delta,
RequestCapacityChangeCallback callback,
blink::mojom::QuotaStatusCode status,
int64_t usage,
int64_t quota);
SEQUENCE_CHECKER(sequence_checker_);
// Raw pointer use is safe, since the manager owns the
// FileSystemAccessAccessHandleHostImpl which owns this class.
const raw_ptr<FileSystemAccessManagerImpl> manager_ = nullptr;
// URL of the file whose capacity is managed through this host.
const storage::FileSystemURL url_;
mojo::Receiver<blink::mojom::FileSystemAccessFileModificationHost> receiver_
GUARDED_BY_CONTEXT(sequence_checker_);
// Total capacity granted to the file managed through this host. Initially,
// this is the file's size. Later, this value is modified through mojo calls
// reaching `RequestCapacityChange()`.
int64_t granted_capacity_ GUARDED_BY_CONTEXT(sequence_checker_);
base::WeakPtrFactory<FileSystemAccessFileModificationHostImpl> weak_factory_
GUARDED_BY_CONTEXT(sequence_checker_){this};
};
} // namespace content
#endif // CONTENT_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_FILE_MODIFICATION_HOST_IMPL_H_